Table 5

 Multiple logistic regression analysis of hay fever and asthma (European Community Respiratory Health Survey definition) in farmers (n = 1798).

Hay fever, adjusted OR (95% CI)Asthma, adjusted OR (95% CI)
QAC, quaternary ammonium compounds.
OR are adjusted for age, smoking habits, sex and all other variables in the model.
– Variable not included in the model.
Organic farming
    No11
    Yes1.2 (0.8 to 1.7)0.7 (0.4 to 1.2)
Current farm type
    Crops only11
    Livestock0.5 (0.3 to 0.9)1 (0.5 to 2.2)
Childhood farming environment
    No11
    Crops only0.5 (0.3 to 0.9)0.5 (0.2 to 1.2)
    Livestock0.4 (0.3 to 0.7)0.6 (0.4 to 1.2)
Disinfectant use
    None11
    QACs2.1 (1 to 4.4)1.7 (0.7 to 3.9)
    Other disinfectants1.5 (0.9 to 2.8)1.4 (0.7 to 2.9)
Hay fever in parents or siblings
    No1
    Yes4.4 (3 to 6.3)
Asthma in parents or siblings
    No1
    Yes3.6 (2.3 to 5.7)